Circulating lubrication



W. HOLTORP. CIRCULATING LUBRICATION. APPLlcArloN FILED JULY 2 1920Patented Nov. l5,1921.

stares 'lVLl-ELM HOLTOR'P, 0F HAMBURG, GEETANY.

CRC'LATNG LUBRCATOIT.

Application led July 5B, 1920.

To all @07mm t may concer/fi.'

Be it known that l, llliLHnLu lrwloifronr, a citizen of the GermanEmpire, residing' at Hamburg', Germany, have invented certain new anduseful improvements in Circulatingi Lubrication, (for which l. havefiled ajoplications in Germany April 9, 1918.; in rlivitzerland lune (i,1919; in Sweden d .ne 11i, 1919, and in Denmark June 20, 1919,) of whichthe following` is a specification.

lrly invention refers to the lubricating of bearings and more especiallycrank shaft bearings.

ns is well known circulating lubrication has been employed in verticalpiston engines, for which the oil is brought to the supporting` facefrom a tank, is collected during the rotation of the shaft in chambersaru rano'ed in the pressureless zone of the sup porting; face and fromthese is pressed baclr into the tank. rlhe collecting' chamber of theseappliances is arranged diametrically in horizontal position. Circulatinglubrication systems thus arranged cannot be made use of for any enginesiii which theA pressureless parts of the bearing are arranged otherwisethan horizontally c. (j. vertically and diametrically, and in which a.certain direction of rotation does not prevail as in these cases thediametrical arrangement of the collecting' chambers in the pressurelesZones does notJ allow of a correct guiding and distributing oi the oil.

My invention intends to apply the advanof arranging collecting; chambersin the'box surface to bearings in which the parts remaining;`pressurelcss are arranged Votherwise than hoizontally and in which theshaft has not an exclusive direction of rctation. y

l? or this purpose two separate oil collectingr chambers are arranged inthe upper part ofthe box, one or the other of which according to thedirection of rotation of the shaft and of 'the insuing differentlirection of the oil flow is fed with the oil flowing from the tank.rlhe oil is presserl into one of the oil collecting chambers by therotating of the shaft, from there into the other oil collecting' chamberand from there baci; into the oil tank.

ln order to prevent the fresh oil from mixing` with the circulating oiland from being thus soiled it appears advisable to d ivide the oil tankin two compartments in such a manner, that one serves as oil chain-Speci'ication of Letters Patent.

Patented Nov. 115, 11921.'

erin No. 393,747.

vber for the circulatingoil, the other to hold the fresh oil. Thechambers are connected in such a way that the fresh oil may :How intothe circulating oil, but not the circulating oil into the fresh oil,land that independently from the fresh oil tank oil ymay be introducedinto the circulating lubrication system.

In the drawings aiiined to thishsoecificaf I L tion two modifications ofthe obgect of this invention are illustrated. They shown in.- lligure 1a vertical section of a bearing, n Fig. 2 the upper half of the box asseen irom underneath,

Fig. 3 the lower half of from above,

Fig. e is a` vertical cross-section of the bearing bush,`

Fig. 5 a vertical.

the box as` seen section on a larger scale through anothermodification.v in which onel oil chamber is "provided for thecirculating oil and another one for the fresh oil,

Fig. o section following line iii-J5 in Fig. 5.

ln the constriction according to Figs. 1 to l1- the oil tank issignified by a., the bodv of the bearing' by Z) and the box of thebearing` by c. ln the upper part of the box the two separate oilcollecting chambers d and c are arrangeo, in the lower "part the oilcollecting chamber f. rl"he connection between the upper oil collecting'chambers and the lower one is lmadeby the lateral grooves g and 7a. Forintroducing the oil from the oil tanlrco into the oil collectingchambers Z and e oil tubes Z, m are provided, which give into channelsn, 0 arranged in the body b of the bearing.

ln the construction according to lli s. and G, in which one oil chamberis provided for the circulating; oil and another one for the fresh oil,a boss 7) is arranged in the fresh oil chamber which is bored rightthrough to the body of the bearing and closed at the bottoni by a pieceof tube y containing` the oil channels Z, m. From above the guide s of avalre t pressed up by a spring r extends into the boss. The spring restsupon the piece of tube g. rlhe valve guide s combined with boss y) andtube g forni a chamber a. rlhe guide c in one place, so that between andtrie wall of boss p a passage o i formed through which the oil fromchamber u can enter the chamber a.

Besides in the seat of valve t bores w are is flattened poured intochambers a.

When the shaft rotates in the direction marked by an arrow the oil (inthe construction according toV Figs. l to t) flows fromY tank a, in theconstruction according to Figs. 5 and 6 from chamber wl-into which itgets through passage n by the movements of the bearing or by directinjection through the openings 'cc-through the oil channel Z and channela into the oil collecting chamber d, from which it is brought next intothe lower collecting chamber by the influence of the rotating shaft f,thus effecting a thorough lubrication of the shaft. The oil trying toescape sidewise is collected by the grooves g and it and brought intothe oil collecting chambers 7 and e, from where it is pressed backthrough channel o and channel lfrz/into tank a (Fig. 2) or chamber a(Fig. 5). When the engine rotates in opposite direction the oil is ledin opposite direction by the shaft and thus gets through channel m andchannel 0 into the'collecting chamber e. From there it gets into thecollecting chamber f, then into the collecting chamber Z and back intotank c; (Fig. l) or chamber a (Fig. 5)through channel a and tube Z.

By arranging twovseparate oil collecting chambers in the upper of bothpressureless parts of the inner surface of the box the lubrication isabsolutely independent upon the direction of rotation of the engine.

In the modification according to Figs. 5 and 6 chamber c receiving thecirculating oil prevents it from mixing with the fresh oil contained inchamber u and the latter from being soiled. The fresh oil enters chambera through passage e by being splashed against the wall of guide s by themovements of the bearing and thus entering the passage in about suchquantities as are needed to cover the loss.

I claim: v

l. In a device of the kind described in combination, a bearing, a rotarypart located in said bea-ring, an oil tank on said bearing, means forcausing the oil to circulate between said tank and said bearingand twoseparate oil collecting grooves in the nonloaded portion of saidbearing, each one means for causing the oil to Vcirculate be` tween saidtank and said bearing, an oil collecting groove in the loaded portion ofsaid bearing, lateral grooves extending from said collecting grooveupward and two separate oil collecting grooves in the non-loaded portionof said bearing each one adapted tocollect the oil at a certaindirection of rotation.

.3. In a device of the kind described in combination, a bearing, arotary part located in said bearing, an oil tank on said bearing, meansfor causing the oil to circulate between said tank and said bearing andtwo separate oil collecting grooves in the nonloaded portion of saidbearing, each one adapted to collect the oil at a certain direction ofrotation, said tank being subdivided in two separate chambers.

4. In a device of the kind described in combination, a bearing, a rotarypart located in said bearing, an oil tank on said bearing,

means for causing the oil to circulate between said tank and saidbearing and two separate oil collecting grooves in the nonloaded portionof said bearing, each one adapted to collect the oil at a Icertaindirection of rotation, said tank being subdivided in two separatechambers and a connection between the said chambers. Y

5. In a device of the kindv described in combination, a bearing, arotary part located in said bearing, an oil tank on said bearing, meansfor causing the oil to circulate between said tank and said bearing andtwo separate oil collecting grooves in the non-loaded portion of saidbearing, each one adapted to collect the oil at a certain direction ofrotation, said tank being subdivided in two separate chambers, one forthecirculating oil and one for fresh oil, and a separate inlet in saidfirst named chamber for the separate introduction of fresh oil into saidchamber.

In testimony whereof I aix my signature.

WILHELM VHoL'ronr.

